a+3=7a+3=7

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Solution for a+3=7a+3=7 equation: 



a+3=7a+3=7

We move all terms to the left:

a+3-(7a+3)=0

We get rid of parentheses

a-7a-3+3=0

We add all the numbers together, and all the variables

-6a=0

a=0/-6

a=0

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